Had the same problem on a fresh BP 1.2.8 install on a fresh WP 3.1. Changed theme to bp default, changed permalink settings, made sure .htaccess contained rewrite rules as generated by BP. mod_rewrite was definitely activated. However, the .htaccess in the BP root (a subdirectory under a local domain) was not evaluated at all. […]

Had the same problem on a fresh BP 1.2.8 install on a fresh WP 3.1. Changed theme to bp default, changed permalink settings, made sure .htaccess contained rewrite rules as generated by BP. mod_rewrite was definitely activated. However, the .htaccess in the BP root (a subdirectory under a local domain) was not evaluated at all. […]

Had the same problem on a fresh BP 1.2.8 install on a fresh WP 3.1. Changed theme to bp default, changed permalink settings, made sure .htaccess contained rewrite rules as generated by BP. mod_rewrite was definitely activated. However, the .htaccess in the BP root (a subdirectory under a local domain) was not evaluated at all. […]